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Featured researches published by Kazuhiro Hayashi.


Japanese Journal of Applied Physics | 2003

Study on 40 Gbits/inch2 Density Molding Using Heat Insulated Mold

Kazuo Inoue; Kazuhiro Hayashi; Yoshihiro Kawasaki; Eiji Ohno

We investigated the high-density molding of a 40 Gbits/inch2 stamper with steep wall pits. This density corresponds to about 60 Gbytes in a 120 mm-diameter disk. We applied the heat-insulated structure to the mold, in which a heat insulating plate was located at the back of the stamper, to reduce the mold temperature. We obtained substrates without pit deformation over the entire pit area as the result of the combination of this mold and the low mold opening speed.


Archive | 2001

Optical disk, method for producing the same, and apparatus for producing the same

Kazuya Hisada; Kazuhiro Hayashi; Kazuo Inoue; Eiji Ohno


Archive | 2001

Method of manufacturing disk substrate, and method and device for manufacturing optical disk

Kazuhiro Hayashi; Kazuya Hisada; Eiji Ohno


Archive | 2003

Optical information recording medium and its manufacturing method and apparatus

Eiji Ohno; Hidemi Isomura; Hideo Matsumoto; Kazuhiro Hayashi; Kazuya Hisada; Kazuo Inoue


Archive | 2003

Optical data recording medium and manufacturing method for the same

Kazuya Hisada; Eiji Ohno; Kazuhiro Hayashi


Archive | 2003

Method of manufacturing multilayer optical information recording medium

Kazuhiro Hayashi; Kazuya Hisada; Eiji Ohno


Archive | 2002

Optical information recording medium production method

Kazuhiro Hayashi; Kazuya Hisada; Shinya Abe; Kazuhiro Higashimaru; Eiji Ohno


Archive | 2008

Optical data recording disc with protrusion between clamping area and center hole

Kazuhiro Hayashi; Eiji Ohno; Masanari Mohri


Archive | 2002

Optical information-recording medium manufacturing method and manufacturing apparatus

Kazuya Hisada; Eiji Ohno; Kazuhiro Higashimaru; Kazuhiro Hayashi


Archive | 2003

Optical data recording medium and manufacturing method for the same, and a method for clamping the optical data recording medium

Kazuhiro Hayashi; Eiji Ohno; Masanari Mohri

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